Oxadiazole compounds containing 4,6-bis-trichloromethyl-S-triazin-2-yl groups, process for their preparation

US5216158A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Georg Pawlowski · Saitama, JP
• Fritz Erdmann · Eltville am Rhein, DE
• Heidrun Lutz · Mainz, DE

Key dates

• Filing date: Oct 8, 1991
• Grant date: Jun 1, 1993
• Expiry date: Oct 8, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/105
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Compounds of general formula I are disclosed ##STR1## wherein R.sup.1 denotes an unsubstituted or substituted carbocyclic or heterocyclic aryl radical, PA1 R.sup.2 and R.sup.3 are different from each other and either denote a hydrogen atom or a 4,6-bis-trichloromethyl-s-triazin-2-yl group, and PA1 n and m independently of each other, denote one of the numbers 0 and 1. The compounds are effective free-radical-forming photoinitiators and photolytically-activatable acid donors for photosensitive compositions.